There was a bug in CF433 div2 C during contest, my solution (identical) passed tests submitted today. I just want somebody to know, so that bugs like this won't happen in the future. My submission: http://mirror.codeforces.com/contest/879/submission/31755726 Accepted submission with the same code: http://mirror.codeforces.com/contest/879/submission/32008085 Should I report/mail it to somebody maybe? I don't know who's responsible for things like this. Thanks.